The following are known Game Genie Codes for Fatal Fury Special on SEGA Game Gear.

• Faster Timer
  03C 38B E6E
• Infinite Time
  00C 38B E6E
• Start Rounds With 10 Seconds
  21C 75E 91D
  10C 71E 195
  04C 73C 3B8
• Start Rounds With 20 Seconds
  21C 75E 91D
  20C 71E 195
  04C 73C 3B8
• Start Rounds With 30 Seconds
  21C 75E 91D
  30C 71E 195
  04C 73C 3B8
• Start Rounds With 40 Seconds
  21C 75E 91D
  40C 71E 195
  04C 73C 3B8
• Start Rounds With 50 Seconds
  21C 75E 91D
  50C 71E 195
  04C 73C 3B8
• Both Players Start With 1/4 Energy
  12C 24E E6B
• Both Players Start With 1/2 Energy
  20C 24E E6B
• Both Players Start With 3/4 Energy
  2DC 24E E6B
• Only Take Damage From Some Projectile Special Moves
  118 109 E61
• Terry’s Throw Does Very Little Damage
  003 814 D5A
• Terry’s Throw Kills
  773 814 D5A
• Terry’s Standing Punch Doesn’t Do Damage
  005 59D F7A
• Terry’s Standing Punch Kills
  775 59D F7A
• Terry’s Standing Kick Doesn’t Do Damage
  005 61D C4A
• Terry’s Standing Kick Kills
  775 61D C4A
• Terry’s Crouching Kick Doesn’t Do Damage
  005 71D F72
• Terry’s Crouching Kick Kills
  775 71D F72